JP2556929B2 - Door phone device with electric lock - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an intercom device with an electric lock, and more particularly to an intercom device with an electric lock capable of handling a plurality of intercoms.

[Prior Art and Problems to be Solved by the Invention] As shown in FIG.
Indoor terminal TE ₂ provided with a handset 32, an electric lock monitoring LED 33, and a lock button 34, a control circuit 31, a speaker 35a, a microphone 35
b, consists of an electric lock 37 provided on the door 36 which is installed near the door phone 35 and the intercom 35 provided with a call button 35c, the control circuit 31 is connected to the indoor terminal TE _2, the indoor terminal TE ₂ and intercom 35 Are connected by a call cable L ₅ . Further, the control circuit 31 and the electric lock 37 provided on the door 36 are connected by the electric lock cable L ₅ .

Visitors can use the intercom system with electric lock with the above configuration
If you operate the call button 35c of 35, the speaker 35a and microphone
A call path is formed with the handset 32 of the indoor terminal TE ₂ by using 35b. The indication whether the electric lock 37 provided on the door 36 is unlocked or locked is displayed by the light emission of the electric lock monitoring LED 33. Displaying the lock status of the electric lock 37, for example, electric lock monitoring
If it is supposed to display with the light emission of LED33, electric lock monitoring LED33
When light is emitted, the electric lock 37 is locked. If you want to unlock the electric lock 37 in this state, release and lock the button 34
Press. When the unlocking / locking button 34 is pressed, the electric lock 37 is unlocked, and the electric lock monitoring LED 33 that is emitting light is turned off. When the unlocking / locking button 34 is operated while the electric lock monitoring LED 33 is off, the unlocked electric lock 37 is locked.

In the doorphone device with the electric lock configured as described above, the indoor terminal TE ₂
Since only one set of electric lock operation display member with one electric lock monitoring LED 33 and one unlocking and locking button 34 is provided on the upper surface of the housing of the above, a plurality of door phones and a plurality of electric doors provided for a plurality of doors are provided. If the lock is provided, there is a drawback that another set of electric lock operation display members must be provided separately.

[Object of the Invention] The present invention has been made in view of the above-mentioned difficulties, and a plurality of door intercoms can be unlocked and locked with one set of an electric lock display member and an operating member, and a plurality of electric lock display members in a standby state can be used. An object of the present invention is to provide an intercom device with an electric lock, which displays the unlocking and locking of an electric lock as a representative and also displays individual display by channel selection, and unlocks and locks the electric lock corresponding to the intercom that is being individually displayed by the operation member. .

[Means for Solving the Problems] An intercom device with an electric lock according to the present invention includes an indoor terminal,
Equipped with a plurality of intercoms connected to the indoor terminal and a plurality of electric locks respectively provided on the doors corresponding to the plurality of intercoms, the indoor terminal represents a plurality of unlocked and locked electric locks in the standby state. Light emitting element to display and unlocking of electric lock corresponding to one of the intercoms selected by the indoor terminal, the locked state is individually displayed by the light emitting element, and the electric lock is unlocked and unlocked according to the individual display, unlocking It consists of a button and.

[Embodiment] An embodiment of a door intercom device with an electric lock according to the present invention will be described in detail below with reference to FIG.

As shown in FIG. 1, a doorphone device with an electric lock according to the present invention includes a communication path switch SW ₁ , SW ₂ , an electric lock switch SW ₃ , S.
Doorphones 20, 23 and doorphones equipped with a control circuit 1 provided with W ₄ and an electric lock monitoring module 2, an indoor terminal TE ₁ , speakers 20a, 23a, microphones 20b, 23b, call buttons 20c, 23c.
Electric locks 22 installed on doors 21 and 24 installed near 20 and 23,
25, and the control circuit 1 and the intercoms 20 and 23 have terminals T ₁ and
The electric locks 22 and 25 provided on the doors 21 and 24 are connected to the electric lock cables L ₃ and L ₄ via the terminals T ₃ and T ₄ by the call cables L ₁ and L ₂ via T ₂ , respectively. It

The terminals T ₁ and T ₂ of the control circuit 1 are connected to the terminals of the indoor terminal TE ₁ via the communication path switches SW ₁ and SW ₂ which are normally open contacts.
Terminals T ₃ and T ₄ are connected to T ₁₁ and T ₁₂ , respectively, and are also connected to terminal T ₁₃ of indoor terminal TE ₁ via electric lock switches SW ₃ and SW ₄ which are normally open contacts. . Call path switch SW ₁
And the control side of the electric lock switch SW ₃ is the terminal T _{16 of the} indoor terminal TE _1.
The control sides of the communication path switch SW ₂ and the electric lock switch SW ₄ are connected to the terminal T ₁₇ of the indoor terminal TE ₁ .

The electric lock monitoring module 2 includes a call monitoring circuit 3 provided with comparators 4 and 5, electric lock opening / closing monitor circuits 6 and 7, an OR circuit 8, AND circuits 9 to 12, diodes D _{1 to} D ₃ , and inverters 13a and 13b. To do. The terminals T ₅ and T ₆ of the electric lock monitoring module 2 are connected to the terminals T ₁ and T ₂ of the control circuit 1, and the terminals T ₇ and T ₈ are connected to the terminals T ₃ and T ₄ of the control circuit 1, respectively.

The terminals T ₅ and T ₆ are connected to one input side of the comparators 4 and 5 of the call monitoring circuit 3, and the other input side of the comparators 4 and 5 are connected to the reference potential point. Further, the output sides of the comparators 4 and 5 are connected to one and the other input sides of the AND circuit 9 via inverters 13a and 13b. Next, the output sides of the comparators 4 and 5 are connected to the input sides of one of the AND circuits 10 and 12, respectively. The output side of the AND circuit 9 is connected to one input side of the AND circuit 11.

The input sides of the electric lock opening / closing monitor circuits 6 and 7 are connected to the terminals T ₇ and T ₈ , and the output sides are connected to the other input sides of the AND circuits 10 and 12, respectively, and one and the other of the OR circuits 8 are connected. Connected with the incoming side.

The output side of the OR circuit 8 is connected to the other input side of the AND circuit 11 described above.

Further, the output side of the AND circuits 10, 11, 12 is a diode D ₁ ,
Connected to terminal T ₉ via D ₂ and D ₃ . Further, the terminal T ₉ is connected to the terminal T ₁₄ of the indoor terminal TE ₁ .

The indoor terminal TE ₁ includes a channel selection circuit 15 to which channel selection buttons 15a and 15b are connected, a communication channel network 16, a handset 17, an unlocking and locking button 18, an electric lock driving circuit 18a, an electric lock monitoring LED 19, an LED driver 19a and Composed of CPU20.

The channel selection buttons 15a and 15b are the communication path switch S
Corresponding to W ₁ and SW ₂ , as described above, speech path switch SW ₁ ,
SW ₂ corresponds to the electric lock switches SW ₃ and SW ₄ . Also,
The lock button 18 is released from the terminal T ₁₃ via the electric lock drive circuit 18a.
The anode side of the electric lock monitoring LED 19 whose cathode is connected to the reference potential point is connected to the terminal T via the LED driver 19a.
_The terminal T ₁₄ is connected to the CPU 20 while being connected to the CPU ₁₄ .

Further, CPU 20 is connected to the terminal T _16, T _17, terminals T _16, T
Call furnace switch SW ₁ , SW ₂ and electric lock switch SW via _17
3 , control SW ₄ .

[Operation of the Invention] In the intercom apparatus with the electric lock having the above configuration, since neither the comparator 4 nor the comparator 5 of the call monitoring circuit 3 is operating in the standby state, the output sides of the inverters 13a and 13b both become H level, and The circuit 9 becomes active, and one input side of the AND circuit 11 becomes H level. Since the other input side of the AND circuit 11 is connected to the output side of the OR circuit 8, when either or both of the electric lock opening / closing monitor circuits 6 and 7 become H level, the output side of the AND circuit 11 becomes H level. Next, electric lock monitoring
LED19 emits light. Assuming that the electric lock open / close monitor circuits 6 and 7 are at the H level in a state where the electric locks 22 and 25 are unlocked, the light emission of the electric lock monitoring LED 19 is an unlock display.

Here, it is assumed that the electric lock monitoring LED 19 emits light and the cause of the light emission is unknown. When the channel selection button 15a is pressed while seeing the light emission of the electric lock monitoring LED 19, the channel selection circuit 15 connects the communication cable L ₁ and the communication path network 16 via the communication path switch SW ₁ closed by the control of the CPU 20. Connecting. As a result, a call can be made between the handset 17 and the speaker 20a and the microphone 20b of the intercom 20. When the call path is formed, the comparator 4 of the call monitoring circuit 3 operates. When the comparator 4 operates, the AND circuit 9 becomes inactive, and one input side of the AND circuit 11 becomes L level. When one input side of the AND circuit 11 becomes L level, the AND circuit 11 cannot be activated regardless of whether the output side of the OR circuit 8 is H level or L level. However, the active side of the comparator 4 causes one input side of the AND circuit 10 to be at the H level. At this time, for example, when the electric lock 22 is unlocked, the output side of the electric lock open / close monitor circuit 8 is at the H level, and the AND circuit 10 becomes active and the electric lock monitor LED 19 emits light. Therefore, it can be seen that the electric lock 22 is unlocked. When released in this state and the lock button 18 is pressed, the electric lock drive circuit 18a operates, the electric lock 22 is locked, and the electric lock monitoring LED 19 is turned off. When the electric lock 25 is unlocked, the output side of the electric lock open / close monitor circuit 7 is at the H level.
10 is not activated and the electric lock monitoring LED 19 is turned off. At this time, if the channel selection button 16a is pressed, the comparator 5 of the call monitoring circuit 3 becomes active, the AND circuit 12 becomes active, and the electric lock monitoring LED 19 emits light. Therefore, it can be seen that the electric lock 25 is unlocked. In this state, when the lock button 18 is pressed, the electric lock 25 is locked by the operation of the electric lock drive circuit 18a, and the electric lock monitoring LED 19 is turned off.

Next, in the call state, the comparator 4 of the call monitoring circuit 3
Or, 5 is active, and one input side of the AND circuits 10 and 12 is at H level. Therefore, when the electric lock of the intercom during the call is unlocked, the output side of the electric lock open / close monitor circuit 6 or 7 becomes H level, the AND circuit 10 or 12 becomes active, and the electric lock monitor LED 19 emits light.

If the electric locks 22 and 25 in the above-described embodiment are normally locked and automatically locked after a certain time has elapsed after unlocking, the unlocking button functions as an unlocking button.

Doorphones 20, 23 and electric locks 22, 25 in the above embodiment
Is not limited to two sets.

The call monitoring circuit 3 in the above embodiment may be an intercom with a camera, and a video signal detection circuit for detecting a video signal in a system in which a television monitor is provided in the indoor terminal TE ₁ .

[Effects of the Invention] An intercom device with an electric lock according to the present invention includes an indoor terminal,
Equipped with a plurality of intercoms connected to the indoor terminal and a plurality of electric locks respectively provided on the doors corresponding to the plurality of intercoms, the indoor terminal represents a plurality of unlocked and locked electric locks in the standby state. Light emitting element to display and unlocking of electric lock corresponding to one of the intercoms selected by the indoor terminal, the locked state is individually displayed by the light emitting element, and the electric lock is unlocked and unlocked according to the individual display, unlocking Since it is composed of a button, there is an effect that a plurality of intercoms can be unlocked and locked by one set of electric lock display member and operation member.

In addition, the electric lock display member displays the unlocking and locking of a plurality of electric locks in the standby state as a representative and individual display by channel selection, and the operating member can unlock and lock the electric lock corresponding to the intercom that is being individually displayed. effective.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an intercom system with an electric lock according to the present invention, and FIG. 2 is a block diagram of a conventional intercom system with an electric lock. 18 …… Unlock and lock button 19 …… Electric lock monitoring LED (light emitting element) 20,23 …… Intercom 21, 24 …… Door 22,25 …… Electric lock TE ₁ …… Indoor terminal

Claims (1)

(57) [Claims] 1. An indoor terminal, a plurality of intercoms connected to the indoor terminal, and a plurality of electric locks provided on doors corresponding to the plurality of intercoms, respectively. The indoor terminal is in a standby state. The light-emitting element representatively showing the unlocking and locking states of the plurality of electric locks in FIG. 3 and the unlocking and locking state of the electric lock corresponding to one of the intercoms selected by the indoor terminal are individually displayed by the light-emitting element. An intercom device with an electric lock, further comprising: an unlocking device for unlocking and locking the electric lock according to the individual display and a locking button.